You can't go wrong if you sign Begovic. I am struggling to see an issue here. Barca will have to pay for Reina, use that money and top up (Won't be much), the balance for Begovic and your problem is solved and you have a better keeper.I really want to keep Reina, but when first-choice goalkeeper appointments go wrong, they go badly wrong. 10 points-difference wrong.
I'd be resting easier if we had a competent backup who could see us through to either getting another new keeper or the point where they've adapted to the league and team ala De Gea (still hasn't fully adapted imo.)
But we have Jones.
Begovic would be about 10mil. how much you expect for Reina?